Created
June 7, 2011 23:39
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MD5 in scala
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| object MD5 { | |
| def hash(s: String) = { | |
| val m = java.security.MessageDigest.getInstance("MD5") | |
| val b = s.getBytes("UTF-8") | |
| m.update(b, 0, b.length) | |
| new java.math.BigInteger(1, m.digest()).toString(16) | |
| } | |
| } |
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Yes, @goofyz is right. This does not work for hashes with leading zeros, they are skipped. For example if you caluclate
hash("iwrupvqb346386")you'll get45c5e2b3911eb937d9d8c574f09instead of0000045c5e2b3911eb937d9d8c574f09.As a remedy, you could do
new java.math.BigInteger(1, m.digest()).toString(16).reverse.padTo(32, "0").reverse.mkStringin the last line.On StackOverflow you find code like
m.digest().map("%02x".format(_)).mkStringwhich also works but is slower.